Researcher May Solve Triple Negative Breast Cancer

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Indiana University School of Medicine researcher Xiongbin Lu is reporting several important findings related to triple negative breast cancer and its treatment. Unlike the three most common forms of breast cancer, he says, triple negative breast cancer has no approved targeted therapies for treatment.

In a paper, Lu and University of Maryland researchers report that TP53 is the most frequently mutated gene in triple negative breast cancer, meaning it fuels the growth of the aggressive cancer. However, it is not a druggable target because of its potential toxicity for nearby healthy cells.

The researchers say they found a neighboring gene, POLR2A, that was a viable target but required some additional effort. Using nanotechnology, they created a “nano-bomb” targeting POLR2A that kills only the cancerous cell and leaves healthy cells alive.

Lu says the nanotechnology approach has potential implications in ovarian, lung, and colorectal cancers that also display the mutated TP53 gene.

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